Fault analysis of Induction Motor fed by a fault tolerant voltage source inverter

Abstract

Induction Motor for many years has been regarded as workhouse in industrial applications. When the application requires large power and torque specifications, the usage of induction motor comes into demand. This results in application of an efficient machine which is stable during various fault conditions. This paper presents the investigations on the fault analysis of a fault tolerant inverter fed three phase induction motor. For this purpose, a fault tolerant operating strategy based on the connection of the faulty inverter leg to the DC link middle point was considered. In this work, simulations studies are done for healthy condition and open leg fault condition in the inverter of a fault tolerant VSI-fed induction motor drive.